lead addresses five categories that enhances environment. indoor air quality, energy, water, materials and resources, and sustainable sites are the five categories for the lead. you can go for several gold or platinum certifications. >> the city wanted to be silver lead status. . maybe gold was a stretch. and people said, if we're going to be a sustainable organization that the pucs this has got to be the top of the line. it's got to be a lead platinum building. what does that mean to us? we run water, power, and sewer. so, those are some of the biggest things involved in lead platinum. ♪ ♪ >> by late 2008 the project, as we got the contractor on board and we were able to start pricing it, we're a multi-, multi-, multi-million dollar over budget. >> the story a lot of people don't know after we got select today do this project, the first price we came in with was $180 million. and the city said, you know, this is a great building, but we just don't want to spend that much money. so, the project was on the verge of being canceled. >> if y